WiFi Ethanol Content Analyzer: Flex Fuel Installation Guide

Quick Answer

Install the PRL Motorsports WiFi ethanol content analyzer on your 2022+ Honda Civic 1.5T or 2023+ Acura Integra 1.5T by connecting the plug-and-play harness, mounting the WiFi module, and configuring the optional 0.5V–4.5V output for your tuning device.

Step-by-Step Installation Process

1. Disconnect the battery and relieve fuel pressure: Turn off the ignition, disconnect the negative battery terminal, and remove the fuel pump fuse or let the engine idle until it stalls to relieve pressure. This prevents fuel spray when you disconnect lines. Never skip fuel pressure relief—safety first.
2. Locate the fuel line and install the ethanol sensor: Follow the factory fuel line from the tank toward the engine. Cut the line at a clean, accessible spot and install the sensor using the provided fittings. Ensure the flow direction matches the arrow on the sensor. Double-check the flow direction to avoid incorrect readings.
3. Route the sensor harness and connect the WiFi module: Route the harness away from heat sources and moving parts. Connect the sensor to the WiFi module and mount the module in a dry, accessible location, such as under the dash or in the glovebox. Secure all connections with zip ties. Keep the module away from water and heat to ensure reliable WiFi connectivity.
4. Connect the optional 0.5V–4.5V output (if using a tuning device): If you plan to log ethanol content, connect the output wire to the analog input on your tuner or datalogger. Configure the voltage range in your tuning software according to the kit's instructions. Verify the voltage range matches your device's input to avoid erroneous logs.
5. Reconnect the battery and test for leaks: Reconnect the battery, turn the ignition to ON (do not start), and inspect all fuel connections for leaks. Then start the engine and let it idle while you check the WiFi module's reading on your smart device. If the reading doesn't match the fuel you know is in the tank, recheck the installation.

Product Facts

• 2022+ Honda Civic 1.5T WiFi Ethanol Content Analyzer / Flex Fuel Kit: Patent Number D1099164; fits all 2022+ Honda Civic 1.5T variants including Si, CVT, 6MT, RHD, and international models. You can install this kit on nearly any 1.5T Civic without worrying about trim or transmission differences.

  

• 2023+ Acura Integra 1.5T WiFi Ethanol Content Analyzer / Flex Fuel Kit: Fits all 2023+ Acura Integra 1.5T variants; WiFi module wirelessly analyzes ethanol content via smart device. Integra owners get the same wireless monitoring convenience without needing a permanent gauge in the cabin.